Monthly weather averages & travel planning

North America › 🇵🇷 Puerto Rico › San Juan
Updated: March 2026
February is a fair time to visit San Juan (5/10). With 11 daily sunshine hours and only 9 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 7th sunniest of the year in San Juan. Culture-focused travellers and those who prefer lighter crowds will find February a practical choice, with prices running lower than peak April without sacrificing all the good weather. March offers a similar profile at lower hotel rates if dates are flexible. The main practical note: San Juan's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.
San Juan's February weather is shaped by atmospheric forces that make the data more than just numbers. The 29°C average high reflects the dominance of a stable subtropical air mass, which suppresses cloud formation and concentrates solar energy at the surface. As a result, 11 daily sunshine hours are recorded on average, and rainfall of 31mm is distributed across approximately 9 days because precipitation events tend to be frequent but short-lived.
29°C
84°F
Avg High
21°C
70°F
Avg Low
9 days
31 mm total
Rain Days
11h
per day avg
Sunshine
78%
Humid
Humidity
The 8°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. At 78% humidity, the 29°C daytime high feels 2-4°C warmer in practice: quick-dry fabrics and shade-seeking between noon and 3pm are the sensible response. The UV index of 3 is low, meaning sun exposure is minimal concern and sunscreen is largely optional. Wind averages 21 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 84°F average high, 70°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for San Juan in February means dressing for 29°C days and 21°C evenings. A lightweight linen or cotton shirt with loose-fit trousers or a sundress handles the 29°C daytime heat. Evening temperatures settle at 21°C, a modest 8°C drop that a light cardigan or denim jacket covers. For footwear, breathable walking sandals work for casual exploration, but closed-toe trainers are better for uneven surfaces in the historic centre. A compact foldable umbrella weighs almost nothing and earns its keep across 9 potential rainy days. At 78% average humidity, quick-dry synthetic or bamboo fabrics dry overnight and stay comfortable longer than cotton.
Local tip: Layers are more practical than a single heavy garment in San Juan. The day-to-evening temperature shift rewards packing a versatile mid-layer you can add or remove as conditions change.
February has no major festivals or public holidays in San Juan, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
Based on 29°C average highs and 9 rainy days
In February, San Juan sits in the dry season corridor, as the ITCZ shifts away from the region and trade winds bring drier, more stable air. This produces reliably sunny days reaching 29°C, with lower humidity than the wet months. Overnight lows of 21°C offer a pleasant reprieve from the midday heat. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
San Juan in February
February ranks 7th sunniest of the year in San Juan, with an average 11 daily sunshine hours. The driest months are February, March, and January. June is the hottest month (31°C avg high); January is the coolest (28°C). From here, temperatures fall 0°C into March. Compared to last month (January: 28°C high, 11 rain days), February is warmer and drier. February sits in the middle of the annual sunshine ranking for San Juan, offering a reasonable balance of good weather and manageable crowds.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 28°C | 22°C | 11 | 11h | View |
| February | 29°C | 21°C | 9 | 11h | View |
| March | 29°C | 22°C | 9 | 11h | View |
| April | 30°C | 22°C | 12 | 12h | View |
| May | 30°C | 23°C | 17 | 12h | View |
| June | 31°C | 24°C | 14 | 12h | View |
| July | 31°C | 25°C | 17 | 12h | View |
| August | 31°C | 25°C | 19 | 12h | View |
| September | 31°C | 25°C | 21 | 11h | View |
| October | 30°C | 24°C | 21 | 11h | View |
| November | 29°C | 23°C | 19 | 10h | View |
| December | 28°C | 22°C | 13 | 11h | View |
January
11 rain days, 11h sun
February
9 rain days, 11h sun
March
9 rain days, 11h sun
April
12 rain days, 12h sun
May
17 rain days, 12h sun
June
14 rain days, 12h sun
July
17 rain days, 12h sun
August
19 rain days, 12h sun
September
21 rain days, 11h sun
October
21 rain days, 11h sun
November
19 rain days, 10h sun
December
13 rain days, 11h sun
Data Sources for San Juan
Climate normals represent 30-year averages (1991-2020). Individual years may vary.